Tablespace-level Block Size Definitions

Hey everyone,

I'm sure this has been thought of but was wondering whether anyone had 
discussed the allowance of run-time block size specifications at the 
tablespace level?  I know that a change such as this would substantially 
impact buffer operations, transactions, access methods, the storage 
manager, and a lot of other stuff, however it would give an 
administrator the ability to inhance performance for specific applications.

Arguably, one can set the block size at compile-time, but for a system 
running multiple databases it *may* be a nice feature.  Would it be used 
a lot?  Probably not.  Would I use it?  Certainly!  Would some of my 
clients use it?  Yes.

Perhaps a TODO item for some advantageous company to fund?

-Jonah